I recently saw a spinning wheel that looks a bit like yours in a pub in Belfast city centre, it was on a shelf behind the bar so I couldn't get a good look as it was behind other paraphernalia - too embarrassed to ask about it! It was in Kelly's cellars - it had a distaff too. Linen used to be a huge industry here but in mills not at home. I'll see if I can pick up the courage to ask next time I'm in town